High-Purity Fused Quartz Glass Manufacturer – Custom Tubes, Plates, Rods & Lab Ware
Lianyungang Zelvo Quartz Products Co., Ltd. fabricates 99.99% SiO2 fused quartz components in Donghai County, Jiangsu – the region known as China's "Crystal Capital". From BET sample tubes and CVD quartz boats to UV-grade optical windows, our engineers turn your drawing into a finished part, starting from a single piece.
- Onsite-VerifiedFactory premises checked on site; legal status confirmed by a third party.
- ≤2h Response100% response rate on buyer messages and drawing reviews.
- 99.99% SiO₂High-purity fused quartz, optical & UV grades available.
- MOQ 1 PiecePrototypes, R&D samples and batch orders welcome.
Quartz Glass Product Lines
Four core families cover most furnace, optical and laboratory requirements. Every item can be resized, re-shaped or machined to your specification.
Quartz Glass Tube
Clear, thick-wall, twin-bore, U-bent and flanged tubes for tube furnaces, CVD, UV lamps and heaters.
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Quartz Glass Plate
Optical sheets, UV windows, fused silica wafers, frosted discs and slotted XRD sample holders.
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Quartz Glass Rod
Solid high-purity rods for light guides, support pins, stirring rods and precision-ground parts.
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Laboratory Instrument
Bell jars, beakers, crucibles, boats, ampoules and custom glass-blown quartz apparatus.
View lab wareFeatured Quartz Components
Engineered for high temperature, chemical attack and UV exposure – selected from our most requested custom builds.
Twin-Tube Quartz Tube for CVD & Vacuum Furnaces
High-Purity Fused Quartz Bell Jar
Fused Quartz Sheet for XRD Sample Holders
Medical-Grade Ozone-Free Quartz Ampoules
UV Fused Silica Quartz Wafer
Polished Quartz Flange Ring & Flanged Tube
Frosted Fused Quartz Disc / Plate
Fused Silica Quartz Boat for Lab Furnaces
Built for Demanding Buyers
What overseas labs, OEMs and distributors tell us matters most when sourcing quartz glass.
Drawing-Based Customization
Cutting, laser drilling, grooving, bending, welding and polishing to your dimensions and tolerances.
Purity & Quality Control
99.99% SiO₂ raw material, visual bubble/inclusion inspection and dimensional checks before packing.
Engineer-Led Service
Replies within 2 hours, technical feedback on feasibility, and a 37% buyer reorder rate.
Safe Global Logistics
Shock-proof foam and wooden crates; FOB, CIF, EXW, DDP and express delivery to 5 major regions.
Lianyungang Zelvo Quartz Products Co., Ltd.
We are a manufacturer and trading company dedicated to experimental and industrial quartz glass, based in Donghai County, Jiangsu Province – China's largest quartz raw-material and processing cluster. Our core range covers optical quartz glass sheets, sapphire sheets, quartz tubes, quartz rods, quartz boats, quartz beakers and bespoke laboratory instruments.
Our specialty is precision finishing: laser drilling, grooving and cutting of fused quartz, combined with traditional flame working for bends, welds and joints. Our engineers bring more than 10 years of hands-on quartz processing experience, which lets us advise on wall thickness, grade selection and tolerances before production starts.
- Business type: Manufacturer & Trading
- Annual revenue: US$2.5M – 5M
- Team: 11 – 50 people
- Established: 2022
- Markets: N. America, SE Asia, S. America
- Also: Middle East, Southern Europe
Top-Ranking Quartz Products
Ranked by real buyer orders – the parts laboratories and heater brands reorder most.
Best Sellers Quartz Tubes for Labs, Furnaces & Heaters
BET sample tubes, combustion reactors, U-bent and patio heater tubes – stocked sizes plus fully custom builds.
Explore Quartz Tubes
BET Quartz Bulb Sample Tube 6/9/12 mm
Compatible with BELSORP-Max / Mini surface-area analyzers.
Thick-Wall 99.99% Pure Quartz Tube
High temperature resistant, with bending, welding and cutting.
High-Purity Fused Quartz Pipe for Semiconductor
High pressure and temperature resistant clear quartz pipe.
Quartz Combustion Tube Reactor
Corrosion-resistant reactor tube for high-temperature analysis.
Patio Heater Replacement Glass Tube
49.5" tall × 4" diameter, with ring, fits 4-sided heaters.
Transparent U-Bent Quartz Glass Tube
Ozone-free, polished, bent to your radius and leg length.
Custom BET Quartz Sample Tube
Made to analyzer port size for adsorption research.
Twin-Bore High-Purity Quartz Tube
Heat-resistant twin design for heaters and sensors.
Fused Quartz Properties & Capabilities
Reference data to help engineers shortlist the right material before requesting a drawing review.
| Property | Typical Value |
|---|---|
| SiO₂ content | ≥ 99.99% |
| Density | 2.20 g/cm³ |
| Continuous working temperature | ≈ 1100 °C |
| Short-term working temperature | ≈ 1300 °C |
| Softening point | ≈ 1683 °C |
| Annealing point | ≈ 1215 °C |
| Thermal expansion coefficient | 5.5 × 10⁻⁷ /K |
| Mohs hardness | 5.5 – 6.5 |
| Chemical resistance | Excellent (except HF & hot alkali) |
Values are typical for clear fused quartz and are for reference only. Optical/UV grades and certificates can be confirmed per order.
Fabrication Capabilities
Application Industries
- Semiconductor
- Solar Photovoltaic
- Infrared Heating
- Research Laboratories
- Aerospace
- Chemical Processing
From Drawing to Delivery
A transparent five-step workflow for custom quartz parts.
Drawing Review
Send dimensions, tolerances and working conditions; engineers confirm feasibility within hours.
Grade Selection
We match clear, optical or UV fused quartz to your temperature and transmission needs.
Fabrication
Cutting, laser drilling, grooving, flame bending and welding on dedicated lines.
Inspection
Dimensional, visual and bubble/inclusion checks; photos available before shipment.
Safe Shipping
Foam-lined cartons or wooden crates, shipped by express, air or sea worldwide.
Inside Our Manufacturing
Real images of our product range, processing and factory capability.
Product Range
Precision Processing
Cutting & Drilling
Applications
Factory ProfileLianyungang Zelvo Quartz Products Co., Ltd. – precision fused quartz from Donghai, the Crystal Capital of China.
Quality InspectionTube Series
Brand Showcase
Packing & ShippingBuyer Questions Answered
What purity is your fused quartz glass?
What is the minimum order quantity?
Can you manufacture quartz parts according to my drawing?
What temperature can fused quartz withstand?
Which shipping and payment terms do you accept?
Have a Drawing or a Tricky Quartz Part?
Share your dimensions, working temperature and quantity. Our engineers will review feasibility and reply within 2 hours on working days.
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